Seagat2011 Lv 1
The University of Penn State has discovered new hidden polymer symmetries [1]
Previously known
- rotation
- rotation inversion
- translation
- time reversal
Discovered
- rotation-reversal symmetry A
- rotation-reversal symmetry B - they found that rotation-reversal symmetry also exists in paired structures where the partner components lean toward each other (A), then away from each other (B) in paired patterns symmetrically throughout a material.
..the only way to account for further unknown symmetries is with fractals.
REFERENCES
- "Search for advanced materials aided by discovery of (new) hidden symmetries" - http://live.psu.edu/story/52368